The study of distribution coefficients of silver and mercury with chelating ion-exhange resin Dowex A-1 |
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| Authors: | Y. Dardenne K. Rengan |
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| Affiliation: | (1) Eastern Michigan University, 48197 Ypsilanti, MI, (USA) |
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| Abstract: | The distribution coefficients (DC) for HgCl42–, Hg(SO4)22–, Hg(NO3)42–, Ag+, Ag(SCN)2– and Ag(NH3)2+ between aqueous solutions and Dowex A-1 were measured in varying hydrogen ion concentrations. The DC of Ag+ in the NO3– media was very low (4 to 6). The DC for the Ag(SCN)2– complex decreased as pH increased. The Ag(NH3)2+ complex had a constant DC of about 65 from pH 8 and above. The trend observed for three mercury complexes in HCl, H2SO4 and HNO3 was similar; the DC decreased steadily from 0.1M to 6M. The HgCl42– complex had the highest DC (9000) while the Hg(NO3)42– complex had the lowest DC (2000). |
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